Chimney-ventilator.



P. BLOOM. CHIMNEY VENTILATOR. APPLICATION I' ILED HA3. 1'], 1909.

Patehted Sept. 7, 1909.

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P. BLOOM.

CHIMNEY VENTILATOR. 7 APPLICATION FILED MAB,.17, 1909.

933,051. Patented Sept. 7, 1909.

2 SHEETSSHEET 2.

PERCY BLOOM, OF NEW YORK, N. Y.

CHIMNEY-VENTILATOR.

Specification of Letters Patent.

Patented Sept. '7, 1909.

Application filed March 17, 1909. Serial No. 484,031.

To all whom it may concern:

Be it known that l, PERCY BLOOM, a citizen of the United States, andresident of how l'ork, borough of Brooklyn, in the county of Queens andState of New York, have invented certain new and useful lniprovements inChimney-Ventilators, of which the following is a specification.

This invention relates to improvements in chimney ventilators.

In the drawings: Figure l is a side view of a ventilator constructed inaccordance with this invention. Fig. 2 is an enlarged vertical sectionalview of a ventilator constructed in accordance with this invention. Inthis figure the parts are separated and drawn closer together. Fig. 3 1sa sectional view of the locking cap, pivot pin and hood assembled. Fig.& is a sectional view of the pivot pin and hood with the locking capraised above. Fig. 5 is a sectional view of the hood with the pivot pinand locking cap above in separated position. Fig. 6 is a plan view fromunderneath the locking cap. Fig. 7 is a plan view from above of theweather hood. Fig. 8 is a side view of the lower end of the spindleshowing an alternative construction, the cap being shown in section.

The principal objects which the present invention has in view are; toprovide a mechanism which may be readily and quickly lubricated; toprovide a mechanism which may be quickly and easily dis-assembled forrepair or replacement; and to provide a long wearing pivot for therevolving structure.

\Vith these objects in view, the construction consists in substitutingfor the usual solid rod or spindle, the present hollow pipe spindle 2.This is of any desired length, and is provided at the lower end with theslightly cupped shape, shown in Fig. 2 of drawing,to more closely fitthe. pivot ball The pivot ball 3- rests within the upper edges of thedepression The depression 4 serves to maintain the ball 3 in oil as longas the cup 5 contains oil. It further serves to maintain the centerlocation of the ball 3. The cup 5' is formed of any desired size and ofa shape substantially as shown in the drawings. The spindle 2 ismaintained in its central and vertical position by the pivot pin -6,which is mounted in a perforation which is extended through the top ofthe hood 7. The pivot pin (3 closely fits within the tubular spindle 2-,and is provided with the extensions 8 which lit within the recesses -9in the top of the hood 7. By means of the extensions -8- the pin 6 isprevented from rotating and thereby causing any loosening action uponthe screw cap lO- when the same is placed in position. The perforationthrough which the pin 6 is inserted extends through the boss 11 set upfrom the cap'7.

The boss l1-- is provided with the flanges -l2. It is under theseflanges that the extensions 13 with which the cap 10 is provided,extends. To permit the extensions 13 to pass the flanges -l2, the saidflanges are cut away at -1el. The flanges 12 may, if desired, beconstructed with an inclined under surface, which produces the effect ofdrawing the cap -l0 hard down upon the top of the pin -6. In thisposition of the cap l0- the pin 6 and the spindle 2, the rotary parts ofthe present device are held firmly 1n their operative positions.

As in the ordinary construction, the spindle 2 is provided with thelifting fan blades 15, fixedly mounted thereon in any suitable manner.The spindle -2 with the blades -l5, are caused to rotate by the cowlshown in Fig.1. The cowl consists in a number of wind vanes 16 which arerigidly mounted on the head 17 and the framing rod l8, to receive thewind with a glancing effect on the one side of the vertical central lineof the cowl; and with a driving effect on the opposite side, whereby thecowl is rotated by the wind.

The blades 15 are so shaped and inclined from the vertical as to operateas an exhaust fan when the cowl is rotated by the Wind. The constructionof the cowl and which are formed integrally with the cup 5- and areriveted to the chimney 20 at -22-. Secured to the chimney 20- are thearms 23. To the upper end of the arms -23 is secured the hood -7, sideflanges 24 being formedin the said hood to receive the ends of the arms23.

The arms -23 are held between the flanges 24 in any suitable manner,thatherein shown being by means of screws 25+.

IVhen assembling the device as described, the spider 21 bearing the cup5 is placed in position on the chimney 20and riveted thereto. WVithinthe cup 5 is then placed the ball -3. Upon the ball 3 is seated thelower end of the spindle 2 which carries the fan l5 and the head 17 withthe vanes 16-.

The arms 23 are riveted to the chimney '20, and the upper end of thearms are placed in position to be screwed to the weather hood 7, asshown. The arms -23 may be attached to the chimney -20 in advance of theplacement of the spindle 2 and its connected parts.

When thespindle and parts carried thereby are in position, the hood 7-is inserted between the upper end of the arms 23 and secured thereto bythe screws The pin -G is now introduced through the perforations in theboss -'11 'am1 into the upper end of the spindle The extensions 8 areinserted in the recesses 9. The cap l0 is then adjusted so that theopenings 1 l in the flange 12 register with the extensions l3-.

fThis register permitsthe flange 12 to pass above the extensions 13 insuch position that when the cap 10 is rotated the said flanges extendover the said extensions and cause the cap to bear down'upon the top ofthe pivot pin '6 to'hold'the same firmly in position.

To dis-assemble the parts, the operation just described is reversed inthat the cap l0 being removed, the pin 6- may be withdrawn, the hood 7-be disengaged from the arms 23 and removed,when the spindle 2-, with itsconnected'vanes -16and the fan 15 maybe drawn from the top of thechimney 20.

It is most desirable that the ventilator should rotate with as littlefriction as possible, and to accomplish thisfthe 'pivot on which itturns must be well lubricated. It is not practical in the position inwhich the device is placed exposed totheweather to mount the same uponanydelicate bearings such as the popular type of anti-friction bearings.In the usual constructions in use today, it is necessary to remove thefans and vanes to lubricate the pivot. This I avoid in the presentinvention by feeding the oil to the pivot point through the hollow spin-To do this with the construction moved. This exposes the open top of thetubular spindle 2-. The spindle is filled with a suitable lubricant andthe pin 6 and cap 10 are replaced. This operation, it will beunderstood, would not involve more than a few minutes at a time.

The lubricant I prefer to use is a heavy oil. It will be understood,however, that the mechanism here shown isof such character that any ofthe lubricating greases could be used.

As the'vanes 1 6"arerotate d, the ball 3- forms the pivot on which thespindle 2- turns. The spindle being filled with the'lubricant, the jointis constantly lubricated. Gradually the oil passes the joint and indoing so escapes into the cup 5-,-

lubricating the joint between the ball 8 and the edge of the spindle.The lubricant passes into the recess -{l under the ball Gradually thelubricant originally placed in the spindle 2 passesinto thecup -5- andfills the same. In this condition, and as longas the oil'remamsin the,cup 5,the pivot for the spindle works in oil. lv'he'n inthe course oftime t again becomes necessaryto re-oil the de- 'v1ce, th1s saccomplished by repeating the operation above describe'd 4 e I In Fig. 8of the drawings have shown a construction wherein a solid steel point2(5- is used in place of the ball --3- heretofore described. In thisconstruction I the steel point 26- -is driven into the lowere11d of thespindle 2 an d shaped as shown. To feed the lubricant to this pointthelspindle is provided with a perforation 27 lin the side and lower endof the tubular portion. Through this perforation tl ie lubricantfpassesto the cup and the recess I Having thus described this invention,

"what is claimed is I chimney ventilator comprising an open endedtubular support provided with wind vanes'and an exhaust fan, a pivot pininsertedin the'upper 'en'dof said'support,

a hood'to hold s'aid pin against rotation 'a'ndadapted to cover theupper end of said support, a ball bearing: located at the lower end ofsaid' tube and serving to close the end of same whereby said tube isconverted into a reservoinfor oil to serve to'lubricate said bearing.

2. A chimney ventilator comprising an 'open' endedtubular supportprovided with wi'nd'vane's and an exhaust fan, a pivot pin inserted inthe upper end of said support, a hood to hold saidpin against rotationand adapted to cover the upper end of said support a cup shapedreservoir located at the lower end of said tubular support, a ballbearing located between said reservoir and the lower end of said tubeand serving to close the same, substantially as set forth.

Signed at New York in the county of New York and State of New York this13th 10 day of March A. D.- 1909.

PERCY BLOOM.

Witnesses:

DANIEL DE V. HARNED, E. F. MURDooK.

